The Schneider Electric WATSN160b/4A Automatic Transfer Switch (ATS) is a PC‑class low‑voltage automatic power transfer device designed to automatically switch between two AC power sources (such as utility and generator) to maintain continuity of electrical supply
Specifications
Parameter Specification
Product Name Schneider Electric WATSN160b/4A Automatic Transfer Switch
Series WATSN (PC‑class ATS)
Device Type Automatic Transfer Switch (ATS)
Rated Current (Ie) 160 A AC (continuous)
Number of Poles 4P (3 phases + neutral)
Rated Operational Voltage (Ue) 400 V AC, 50/60 Hz (3‑phase)
Network Type AC three‑phase (380/400/415 V)
Controller Type Type A (basic controller)
Transfer Modes Self‑starting & self‑restoring, self‑starting without restore, mutual backup
Utilisation Category AC‑33B (motor and mixed loads switching)
Rated Insulation Voltage (Ui) 800 V
Rated Impulse Withstand (Uimp) 8 kV
Rated Operational Voltage (Ue) 400 V AC
Mechanical Durability 10,000 cycles
Electrical Durability 6,000 cycles
Contact Position Indicator Yes
Mounting DIN rail / rack‑mounted (varies by panel)
Short‑Circuit Making Capacity (Icm) ~17 kA (typical)